MBA 2014 Restarts when opened from sleep

cosmichobo

macrumors 6502
May 4, 2006
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G'day,

I have just purchased a 2014 MacBook Air.

It's in pretty good condition, no real issues to speak of that I've noticed thus far - except for 1 - When you open the MBA after it's been left sleeping for "a period of time" (typically overnight) - it presents with a blank screen, after a moment it chimes, then chimes again, and then starts up.

It does not remember what I was doing - just takes me to the desktop.

I've done a little googling and can see this appears to be a known issue, but without any solid answers?

The battery isn't low (ie 70% this latest time).

Any suggestions for how to remedy? It looks like the previous owner installed a fresh copy of Mojave before selling, so I'm guessing re-installing the OS wont help - but could certainly give that a go.

Cheers

cosmic
 
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cosmichobo

macrumors 6502
May 4, 2006
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Thanks for the reply.

I was going to check this - until I learned about pentalobe screws... Waiting on a screwdriver now.

So - if it is 3rd party - is that all that the error is reporting? Not an "issue" - just a discrepancy?
 

cosmichobo

macrumors 6502
May 4, 2006
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Comes up as "Feather M13 256GB".

I'm a bit out of date. In Disk Utility, I can see the "Feather" disk, then an APFS Container, which contains the APFS volume. Is that normal these days?
 

Audit13

macrumors 601
Apr 19, 2017
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Toronto, Ontario, Canada
Makes sense that the MacBook is behaving this way.

When the MacBook is waking from hibernation, it tries to restore the hibernation file from the SSD but it's unsuccessful, suffers a kernel panic, and restarts.

You will need to disable hibernation mode 25. By doing this, the MacBook will not enter deep sleep.

An alternative solution would be to install an original apple SSD.
 

cosmichobo

macrumors 6502
May 4, 2006
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I appreciate your feedback! :)

So - it's not possible to set up the "Feather" SSD to function in the same way as the original Apple SSD?

Happy enough to kill hibernation if that's what it takes, just exploring options.
 

Audit13

macrumors 601
Apr 19, 2017
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Toronto, Ontario, Canada
There is no way to make a non-apple SSD function exactly like an apple SSD unless you are able to modify and flash an efi bootrom with an updated nvme driver from high Sierra or Mojave.
 

cosmichobo

macrumors 6502
May 4, 2006
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Ahh ok - I thought it may have been as "simple" as replacing the HDD in a Gen1 AppleTV, with its multiple manually created volumes/etc.

Thanks for all the info. Appreciated.
 
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cosmichobo

macrumors 6502
May 4, 2006
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I just paid around $600 for the machine, which for Australia isn't a bad price, but not a "steal" - not looking to invest anything in it right now.
 

cosmichobo

macrumors 6502
May 4, 2006
414
118
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Hi again,

I set the hibernate mode to 0, restarted, and - after being left with the lid closed overnight - it still did the double-chime restart.

Hibernate was originally set to 3 when I checked it out.

I have a pentalobe screwdriver now, so will pop the back and look for any oddities... have heard perhaps a lot of dust could cause issues??
 

cosmichobo

macrumors 6502
May 4, 2006
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Checked this out, and no - the bootrom is:

111.0.0.0.0

I believe it should be 117.0.0.0.0 for a MacbookAir6,2.

I've just been googling / searching Apple for a security update for Mojave so I can update the bootrom, having read that Apple don't offer apps just to update the firmware any more... but no luck.

The machine is running 10.14.6.

Think I may go the re-instal route.
 

Audit13

macrumors 601
Apr 19, 2017
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Toronto, Ontario, Canada
Bootrom updates are installed during an os update.

You could try reinstalling Mojave from scratch but there is no guarantee the bootrom update will take.

Is it possible to borrow an Apple drive from another person?
 

paridedamessina

macrumors newbie
Aug 25, 2019
1
0
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Hi I'm new in this forum, I'm from Italy and I've bought a Fledging M13 but have trouble intsalling in MBP retina mid 2014...HOWEVER i think one possible solution is to refer to the knowledge base in the Feather suport page (https://fledging.net/feather-support/#M13) about "Trouble waking up from sleep" in wich they suggest to use this command in Terminal : sudo pmset hibernatemode 0 standby 0
 

Audit13

macrumors 601
Apr 19, 2017
4,317
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Toronto, Ontario, Canada
Running these commands will disable deep sleep which means the MacBook will not write the ram contents to a hibernation file and power itself off. This results in battery drain when the lid is closed.